EP1812740B1 - Collier pare-feu ameliore - Google Patents

Collier pare-feu ameliore Download PDF

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Publication number
EP1812740B1
EP1812740B1 EP05786855.6A EP05786855A EP1812740B1 EP 1812740 B1 EP1812740 B1 EP 1812740B1 EP 05786855 A EP05786855 A EP 05786855A EP 1812740 B1 EP1812740 B1 EP 1812740B1
Authority
EP
European Patent Office
Prior art keywords
layer
intumescent material
fire collar
opening
conduit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP05786855.6A
Other languages
German (de)
English (en)
Other versions
EP1812740A1 (fr
EP1812740A4 (fr
Inventor
James Walter George Truss
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IG6 Pty Ltd
Original Assignee
IG6 Pty Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from AU2004905546A external-priority patent/AU2004905546A0/en
Application filed by IG6 Pty Ltd filed Critical IG6 Pty Ltd
Publication of EP1812740A1 publication Critical patent/EP1812740A1/fr
Publication of EP1812740A4 publication Critical patent/EP1812740A4/fr
Application granted granted Critical
Publication of EP1812740B1 publication Critical patent/EP1812740B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C2/00—Fire prevention or containment
    • A62C2/06—Physical fire-barriers
    • A62C2/12—Hinged dampers
    • A62C2/14—Hinged dampers with two or more blades
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C2/00—Fire prevention or containment
    • A62C2/06—Physical fire-barriers
    • A62C2/065—Physical fire-barriers having as the main closure device materials, whose characteristics undergo an irreversible change under high temperatures, e.g. intumescent
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/10—Means for stopping flow from or in pipes or hoses
    • F16L55/1026—Fire protection devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/1624—Destructible or deformable element controlled
    • Y10T137/1797—Heat destructible or fusible
    • Y10T137/1819—Safety cut-off

Definitions

  • This invention relates to fire collars.
  • Fire collars are typically used for preventing fire spreading from one side of a wall or floor to the other side via a penetration through which pipes, ducts or other service carriers pass.
  • conduits particularly pipes and ducts, which are formed from plastics materials, for example, PVC and HDPE, but they are also used with rubber based materials, deformable metals and various composite materials.
  • One known type of fire collar comprises a metal collar having a liner of an intumescent material which is adapted to be fastened to a barrier, for example, a concrete wall or floor, around a conduit penetrating the barrier.
  • a barrier for example, a concrete wall or floor
  • the intumescent material expands upon its temperature reaching a predetermined level which in turn forces the conduit to collapse or pinches it off thereby inhibiting the spread of fire from one side of the barrier to the other. Examples of such fire collars are described in US058346 and US347767 .
  • Another form of fire collar relies on the heat from the fire to melt the conduit adjacent the point of penetration and cause the intumescent material to expand across the void left by the melted conduit thereby closing it.
  • DE 196 00 369 discloses a fire damper that can be attached between conduits.
  • the damper has actuation means and closure elements which can pivot to form a closure between the conduit ends in response to a fire.
  • the fire collar described in that application has two opposed torsion springs and a sleeve of intumescent material mounted in a frame such that the frame can be mounted to a barrier and the sleeve fitted about a conduit passing through the barrier whereby the tail of each spring is adapted to engage with the sleeve which in turn engages with the conduit in response to fusing of respective retaining links holding the spring tails in the loaded position. While that fire collar is effective in use, it is more expensive to produce than is desirable.
  • a fire collar including: a mounting defining an opening adapted to receive a conduit therethrough; a layer of intumescent material supported adjacent said opening by said mounting such that the intumescent material extends substantially about said opening; actuating means operatively connected to said mounting for movement from a non-operating mode proximal to said layer of intumescent material to an operating mode in which it moves in a longitudinal plane through said opening relative to the conduit to force at least a portion of said layer of intumescent material to engage the conduit within the opening so as to at least partially obstruct said opening in response to the temperature reaching a predetermined level.
  • said mounting is a housing adapted to house a layer of intumescent material therein and to receive a conduit therethrough and said layer of intumescent material is housed in said housing and adapted to at least partially form a sleeve about a conduit passing through said housing.
  • the or each said actuating means includes a contactor which is adapted to move in a plane extending longitudinally through the opening relative to the conduit and to engage (directly or indirectly) the outer face of the layer or segment of intumescent material. It is also preferred that the contactor move in a plane containing the longitudinal axis of the conduit or a plane close to that plane. It is also preferred that the contactor be elongate in form and makes contact with the intumescent material over a substantial longitudinal distance relative to the conduit thus being positioned to force a substantial portion of the material into an obstructing position over the passage.
  • each actuating means is a torsion spring which is mounted to the mounting with the tail restrained in the non- operating position by a fusible link and upon release the tail is arranged to engage the external face of the intumescent material and force it at least partially across the opening.
  • the axis of the torsion spring is parallel to a tangent to the outer surface of the conduit passing through the opening in the case of a cylindrical conduit and parallel to a side wall of the conduit in the case of a polygonal conduit.
  • the fusible link is formed from a plastics material which softens to a fusible state upon the ambient temperature reaching a predetermined "high" temperature at which the spring causes it to break. In such form, the fusible link holds the tail of the spring in the "loaded” position, that is in a position with the spring wound sufficiently to apply a suitable force on the intumescent material.
  • the invention include two sets of actuating means, one set being adapted to engage the layer of intumescent material from one end and the other set being adapted to engage the intumescent material from the other end.
  • actuating means one set being adapted to engage the layer of intumescent material from one end and the other set being adapted to engage the intumescent material from the other end.
  • a layer of protective material extends about the layer or a segment of intumescent material to protect it from damage by the actuation means as it softens pursuant to an increase in temperature.
  • reference to engagement of the intumescent material by the actuating means is to be understood as encompassing engagement with a layer of other material interposed between the actuation means and the intumescent material, the other material being a layer of stainless steel gauze or fibreglass cloth.
  • the layer of intumescent material is generally cylindrical in form and arranged to closely fit around the conduit which is to pass therethrough.
  • the collar also include retaining means for retaining the cylindrical layer at one end in position or alternatively that it be secured to said mounting or said housing and be free at the other end whereby the actuating means can force the layer to collapse over the passage from the free end.
  • the layer of intumescent material may be constituted by a plurality of layers.
  • the fire collar may be adapted to be located in or against a barrier and having a passage therethrough and being adapted to respond to a fire by sealing said passage, said actuation means being located around said passage and said intumescent material being between said actuation means and said passage, said actuation means being held in a first position by heat actuated holding means such that when a predetermined temperature is reached as a result of a fire, said actuation means is released and applies a force to said intumescent material having a component along the passage thereby pushing it towards the center of said passage to obstruct said passage.
  • the fire collar may be adapted to be set into a concrete barrier during formation of the barrier, said mounting including: a housing having a passage or cavity adapted to receive a conduit; one or more torsion springs adjacent said passage or cavity and adapted to engage said intumescent material upon the ambient temperature reaching a predetermined level, said one or more torsion springs being arranged to apply a force to said intumescent material having a component along the passage or into the cavity.
  • the fire collar 10 illustrated in Figs. 1 to 4 includes a housing 11 constructed of a plastics material and has a generally cylindrical side wall 12 which defines a bottom opening 13 and terminates in an outwardly extending bottom flange 14 at one end contiguous with the side wall and an inwardly extending top flange 16 at its upper end also contiguous with the side wall which terminates in a cylindrical guide ring 17 defining a top opening 18 adapted to receive therethrough a typical 100mm PVC sewer pipe or ventilation duct (not shown).
  • the top and bottom openings are coaxial with the cylindrical wall along axis 19, and the cylindrical wall tapers slightly inwards towards the top opening forming a slightly expanding passage 20 therebetween.
  • the bottom flange is adapted to rest against a sheet of concrete formwork and be secured thereto so that a concrete wall or floor can be poured around the housing.
  • a plurality of screw holes 21 are provided around the flange for securing the housing to the formwork.
  • the holes are provided in frangible portions 22 of the flange which break off upon removal of the form work and remain therewith.
  • Three elongate generally rectangular openings 23, 24 and 25 are provided in the side wall and two spaced apart radial walls 26 and 27 and a planar outer wall 28 parallel to the side wall 12 (although the outer wall can be concentric with the side wall if desired) extend outwardly therefrom to define equi-angularly spaced recesses 31, 32 and 33.
  • Each recess houses therein a torsion spring 34 which is retained by a pin 36 extending through the recess and being secured in the spaced apart radial walls on the spring axis 37.
  • the opposed tails 38 and 39 of the spring are held together in the loaded position by a fusible link 41 as can be seen in Fig.5 .
  • the cylinder formed by the intumescent material and the gauze also tapers slightly inwards towards the top opening to more easily allow a PVC duct or pipe to be fitted therethrough from the bottom so that the intumescent material forms a sleeve thereabout.
  • the intumescent material and the surrounding gauze is secured to the wall 12 near its upper end (that is near the flange 16) by a plurality of spaced apart staples.
  • the intumescent material is held purely by friction between it, the gauze and the housing.
  • the ambient air increases in temperature and causes the fusible link 41 to soften and break under the spring force of the torsion spring 34 (or alternatively it melts)where upon- the spring is released and the outer tail 38 bears against the outer wall 28 of the spring housing and the inner tail 39 bears against the gauze and through the gauze the intumescent material, thereby forcing the gauze and the intumescent material encased thereby inwards towards the axis 19 so that it obstructs the passage 20.
  • the PVC duct or pipe passing through the passage will have softened coincidentally and may have even burned to an extent allowing the torsion spring tail 39 to crush it inwards while forcing the intumescent material shown as 43a into the passage or at least into engagement with the crushed pipe as shown as 45 in Fig. 3 . It will also be appreciated that as the intumescent material increases in temperature, it will expand and fully close the passage 20 thereby preventing the egress of smoke and poisonous gases from the site of the fire.
  • the stainless steel gauze also assists the operation of the fire collar in directing expansion of the intumescent material inwards rather than outwards which in turn assists in forcing the collapse of the conduit or pipe therein.
  • a layer of fibreglass cloth is used instead of stainless steel gauze.
  • the fire collar 110 illustrated in Fig. 6 is similar to that shown in Fig. 1 and accordingly corresponding numbers are used to reference corresponding components except prefaced by a "1".
  • the collar 110 is particularly suited for use in walls where high temperature air can be close to either side and includes a cylindrical housing 111 with a torsion spring 134 having its axis in a similar position to that of collar 10 but centrally of the cylinder of intumescent material and the tails 138 and 139 of the spring extend in opposite directions when in the loaded position adjacent the intumescent material and are retained there by respective fusible links 141 which are connected to the housing at eyelets 151 and move towards each other when in the operating position forcing the intumescent material inwards from either one end or both ends depending on whether one or both fusible links have been fused thus responding to high temperature on either one or both sides of a barrier.
  • the fire collar 210 illustrated in Fig. 8 is also similar to that shown in Fig. 1 and accordingly corresponding numbers are used to reference corresponding components except prefaced by a "2".
  • the collar 210 is also particularly suited for use in walls where high temperature air can be close to either side.
  • the collar includes a cylindrical housing 211 which is similar in length to the housing 11 of collar 10 and considerably shorter than the housing 111 of collar 110.
  • the main difference is that the collar includes six torsion springs instead of three and that one set of three alternate springs are arranged to collapse the layer of intumescent material from one end and the other set of three are arranged to collapse it from the other end so that it can close off a conduit in response to a fire on either side of a wall.

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Building Environments (AREA)

Claims (14)

  1. Collier pare-feu (10) comprenant:
    un boîtier (11) délimitant une ouverture (18) adaptée au passage d'un conduit;
    une couche de matériau intumescent (43) supportée à proximité de ladite ouverture par ledit boîtier de telle sorte que le matériau intumescent s'étende sensiblement autour de ladite ouverture;
    une couche de matériau de protection (44) s'étendant autour de ladite couche de matériau intumescent;
    des moyens d'actionnement (34) connectés de manière opérationnelle audit boîtier (11) pour le mouvement entre un mode non-opérationnel proximal de ladite couche de matériau intumescent et un mode opérationnel dans lequel il se déplace dans un plan longitudinal à travers ladite l'ouverture (18) par rapport au conduit dans le sens d'un axe longitudinal central de l'ouverture, (19) en engagement avec ladite couche de matériau de protection (44) pour forcer au moins une partie de ladite couche de matériau intumescent (43) à s'engager dans la conduite au sein de l'ouverture et ainsi au moins partiellement obstruer ladite ouverture en réaction à un niveau prédéterminé de la température,
    caractérisé en ce que ledit matériel de protection est de la gaze d'acier inoxydable ou un tissu de fibre de verre.
  2. Collier pare-feu (10) selon la revendication 1, dans lequel ladite couche de matériau intumescent (43) est généralement de forme cylindrique et dans lequel ladite couche de matériau intumescent (43) et ladite couche de matériau de protection (44) vont en rétrécissant légèrement vers l'intérieur et vers le côté supérieur de l'ouverture (18).
  3. Collier pare-feu (10) selon la revendication 1 ou selon la revendication 2, dans lequel ladite couche de matériau intumescent (43) comprend un ou plusieurs segments de matériau intumescent disposés autour de ladite ouverture (18) et dans lequel lesdits un ou plusieurs segments sont supportés à une extrémité par ledit boîtier (11).
  4. Collier pare-feu (10) selon l'une quelconque des revendications précédentes, dans lequel ledit boîtier est un logement (11) adapté pour loger ladite couche de matériau intumescent (43) et pour le passage d'un conduit et ladite couche de matériau intumescent est logée dans ledit logement et adaptée pour au moins partiellement former un manchon autour d'un conduit traversant ledit logement.
  5. Collier pare-feu (10) selon l'une quelconque des revendications précédentes, dans lequel lesdits moyens d'actionnement (34) comprennent un contacteur (39) qui est adapté pour s'engager dans la face extérieure dudit un matériau de protection (44).
  6. Collier pare-feu (10) selon la revendication 5, dans lequel ledit contacteur (39) est adapté pour se déplacer dans un plan contenant l'axe longitudinal (19) du conduit ou un plan proche dudit plan.
  7. Collier pare-feu (10) selon la revendication 5 ou selon la revendication 6, dans lequel ledit contacteur (39) est de forme allongée et adaptés pour toucher le matériau de protection (43) sur une distance longitudinale non négligeable par rapport au conduit.
  8. Collier pare-feu (10) selon l'une quelconque des revendications 5 à 7, dans lequel lesdits moyens d'actionnement consistent en un ressort de torsion (34) qui est monté sur le boîtier (11), le ressort de torsion ayant un axe de ressort (37) et au moins une queue (39) éloignée dudit axe de ressort, la queue est maintenue en position non-opérationnelle par une liaison fusible (41) et disposée pour s'engager dans la face externe du matériau de protection (44) et la forcer au moins partiellement à traverser l'ouverture (18) lors de la libération de la liaison fusible.
  9. Collier pare-feu (10) selon la revendication 8, dans lequel, en cours d'utilisation, l'axe de ressort (37) du ressort de torsion (34) est parallèle à une tangente à la surface extérieure du conduit passant par l'ouverture (18).
  10. Collier pare-feu (10) selon la revendication 8 ou selon la revendication 9, dans lequel ladite liaison fusible (41) est constituée d'une matière plastique qui devient souple à un état fusible lorsque la température ambiante augmente de façon prédéterminée pour provoquer la rupture du ressort.
  11. Collier pare-feu (10) selon la revendication 8, dans lequel ladite liaison fusible (41) maintient la queue (39) du ressort (34) dans la position comprimée.
  12. Collier pare-feu (10) selon l'une quelconque des revendications précédentes, dans lequel la couche de matériau intumescent (44) est disposée pour enserrer étroitement le conduit la traversant.
  13. Collier pare-feu (10) selon la revendication 12, comprenant des moyens de retenue à une extrémité pour maintenir en place la couche cylindrique de matériau intumescent à une extrémité.
  14. Collier pare-feu (10) selon la revendication 13, dans lequel la couche de matériau intumescent (43) est fixée audit boîtier ou audit logement (11) près d'une extrémité et est libre à l'autre extrémité.
EP05786855.6A 2004-09-27 2005-09-26 Collier pare-feu ameliore Active EP1812740B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2004905546A AU2004905546A0 (en) 2004-09-27 Improved fire collar
PCT/AU2005/001477 WO2006034534A1 (fr) 2004-09-27 2005-09-26 Collier pare-feu ameliore

Publications (3)

Publication Number Publication Date
EP1812740A1 EP1812740A1 (fr) 2007-08-01
EP1812740A4 EP1812740A4 (fr) 2011-04-27
EP1812740B1 true EP1812740B1 (fr) 2016-04-13

Family

ID=36118498

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05786855.6A Active EP1812740B1 (fr) 2004-09-27 2005-09-26 Collier pare-feu ameliore

Country Status (3)

Country Link
US (1) US7784221B2 (fr)
EP (1) EP1812740B1 (fr)
WO (1) WO2006034534A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007048035A1 (de) * 2007-10-06 2009-04-16 Bartholomäus, Gert Brandschutz-Absperrung für Rohrleitungen
WO2011032211A1 (fr) * 2009-09-21 2011-03-24 Ig6 Pty Ltd Colliers coupe-feu améliorés
WO2014130683A1 (fr) 2013-02-20 2014-08-28 Crane Engineering, Inc. Conduit auto-obstruant pour transport de fluide inflammable
NZ716757A (en) * 2015-02-13 2023-02-24 Passive Fire Systems Qld Pty Ltd Fire Collar
US10323856B2 (en) 2015-05-22 2019-06-18 Superposed Associates Llc Passive ductwork intumescent fire damper
US10363443B2 (en) * 2016-06-30 2019-07-30 Superposed Associates Llc Passive ductwork intumescent fire damper
DE102017006661B4 (de) * 2017-07-13 2020-02-06 Gert Bartholomäus Brandschutzeinrichtung für Rohrleitungen mit einer schwimmenden Lagerung der Brandschutzklappen
NL2022587B1 (en) 2019-02-15 2020-08-28 Walraven Holding Bv J Van Firestop device including an expandable fold-out collar
GB2587019B (en) * 2019-09-13 2021-09-15 Intumescent Systems Ltd A ceiling unit for pipework
US11686418B2 (en) * 2020-04-06 2023-06-27 Creative Pultrusions, Inc. Fire resistant composite pole system

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8317709U1 (de) * 1983-06-18 1984-10-31 Bio-Brandschutz Isoliersysteme Osnabrück GmbH & Co KG, 4500 Osnabrück Brandschutz-wanddurchfuehrung fuer kunststoffrohre
US4559745A (en) * 1983-12-22 1985-12-24 Fire Research Pty. Limited Devices for the fire stopping of plastics pipes
DE3821969C1 (fr) 1988-06-29 1990-02-01 Michael Dr. 8000 Muenchen De Spaeth
US5347767A (en) 1992-01-29 1994-09-20 Rudolf Roth Fire retardant sleeve
DE29511265U1 (de) 1995-07-12 1995-09-21 Bartholomäus, Gert, 89607 Emerkingen Brandschutzeinrichtung zur Abschottung einer Lüftungsrohrleitung
DE19643854B4 (de) * 1996-10-30 2004-07-15 Bartholomäus, Gert Brandschutzeinrichtung für Rohrleitungen
DE19842100A1 (de) * 1998-09-15 2000-03-23 Promat Gmbh Rohrabschottung zur Anbringung an einer Gebäudewand oder -decke, durch die ein im Brandfall abzuschottender Leitungskanal hindurchführt
US6161564A (en) * 1999-04-06 2000-12-19 Cornwall; Kenneth R. Fire transmission prevention system
DE10043430A1 (de) * 2000-09-04 2002-03-21 Hilti Ag Brandschutzmanschette
US6959719B2 (en) * 2001-09-10 2005-11-01 James Walter George Truss Fire collar
AU2003900592A0 (en) 2003-02-11 2003-02-27 Truss Holdings Pty Ltd Fire collar

Also Published As

Publication number Publication date
EP1812740A1 (fr) 2007-08-01
WO2006034534A1 (fr) 2006-04-06
EP1812740A4 (fr) 2011-04-27
US20080092467A1 (en) 2008-04-24
US7784221B2 (en) 2010-08-31

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